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Modern manufacturing today is demanding higher speeds and feeds, greater accuracy and faster tool changes than ever before to remain competitive and profitable. Producers all over the world have looked at various ways of achieving these goals. One attractive solution is HSK, a revolutionary tooling system developed in Europe and spreading quickly here in U.S. It offers users the fastest possible material removal rates, highest accuracy, and rigidity.

HSK - is an abbreviation of the new standard Tooling Interface, which was developed in Germany and describes tooling shanks DIN69893 (DIN 69893) and spindle receivers DIN69063 (DIN 69063).

These standards were introduced as non-proprietary solutions. They became extremely popular in Europe and North America, particularly for high-speed applications. In fact, the HSK spindle is considered a default parameter in machine tool specifications of the major automotive, aviation, and airspace companies.
Tornado 2000 with HSK50E spindle, Courtesy of Hexel Corp.

It is important to note that the HSK working group did not adopt a specific product design, but rather a set of standards that defined HSK toolholders for different applications. Developers considered design alternatives, they had a very specific set of performance criteria in mind. Totally there were created six separate standards for HSK Shanks and six standards for matching Spindle Receivers.

Without exaggeration, we can proclaim that the debut of HSK technology in metal cutting industry is equivalent to the appearance of the microchip in electronics. It stimulates progressive evaluation of the conservative cutting tool industry. It forces everyone to revise production environment, rethink manufacturing methods, and requires cruise again through an exited learning curve to achieve success.

Currently there are more then 50,000 spindles, equipped with the HSK interface, operating worldwide. The industrial employment of HSK tools was initiated in Europe during GMN HSK Spindle with automatic tool changethe early 90’s. However end users, especially companies, which recently joined (or were planning to do so) to the "HSK Club", experienced some difficulties in the application of this new technology. A lack of sufficient information and partial misunderstanding in proper utilization of HSK tooling still remains.